The superwinch X6 on my truck had some seriously melted wires, both on the positive leads from the battery and the positive lead to the winch. The controller etc is shot as well. My question , is there a way to test the winch itself on the bench to see if its still good or shot?
You can jump a few of the wires to directly power the winch without using the controller. I forget exactly how to to it, but I bet youtube, or a search here could show you.
I've done it on an X9, but it was a few years ago.
You need to know what terminals to jump. Look online for a wiring diagram. Does it free spool. My guess is with melted cables and a bum controller is that is probably rusted up. Might want to do so research on where to get parts anyway as if it does work, you'll need a new controller.